US3860178A - Fuel injection nozzle - Google Patents

Fuel injection nozzle Download PDF

Info

Publication number
US3860178A
US3860178A US435165A US43516574A US3860178A US 3860178 A US3860178 A US 3860178A US 435165 A US435165 A US 435165A US 43516574 A US43516574 A US 43516574A US 3860178 A US3860178 A US 3860178A
Authority
US
United States
Prior art keywords
nozzle holder
pressure
channel
nozzle
intersection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US435165A
Other languages
English (en)
Inventor
Kurt Seifert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19732305766 external-priority patent/DE2305766C3/de
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Application granted granted Critical
Publication of US3860178A publication Critical patent/US3860178A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/002—Arrangement of leakage or drain conduits in or from injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/004—Joints; Sealings
    • F02M55/005—Joints; Sealings for high pressure conduits, e.g. connected to pump outlet or to injector inlet

Definitions

  • the pressure channel has a connecting g Application Priority Data bore passing radially to the longitudinal axis of the Feb. 7, 1973 Germany 2305766 nozzle holder.
  • a drain channel of the spring chamber passes in the vicinity of a pressure channel connection [52] US. Cl. 239/533, 239/ 125 bore in a longitudinal direction of the nozzle holder. [51] Int. Cl B05b 1/30 An intersection is provided between the pressure [58] Field of Search 239/124, 533, 125; channel and the drain channel.
  • a pressure socket is 222/424 arranged in the connecting bore for separating the pressure channel and the drain channel.
  • the invention relates to a fuel injection nozzle for internal combustion engines.
  • the invention relates more particularly, to a fuel injection nozzle for internal combustion engines having a pressure channel sectionally passing beside the spring chamber and eccentrically in the nozzle holder, the pressure channel having a connecting bore leading radially to the longitudinal axis of the nozzle holder, and having a drain channel of the spring chamber passing in the vicinity of the pressure channel connection bore in the longitudinal direction of the nozzle holder.
  • a fuel injection nozzle for internal combustion engines which includes a nozzle holder.
  • a pressure channel leads, in
  • the pressure channel has a connecting bore passing radially to the longitudinal axis of the nozzle holder.
  • a drain channel of the spring chamber passes in the region of a pressure channel connection bore in a longitudinal direction of the nozzle holder.
  • An intersection is provided between the pressure channel and the drain channel.
  • a pressure socket is arranged in the connecting bore for separating the pressure channel and the drain channel. An end portion of the socket protrudes into the nozzle holder axially before and after the intersection. Sealing members are provided in each side of the intersection, and a recess means having a surface and defining a passageway for leak channel traverse flow is provided in the intersection.
  • the pressure channel and the drain channel intersect.
  • the separation of the channels is achieved by means of a pressure socket arranged in the connection bore, preferably developed as a screw.
  • a seal is positioned axially before and after the intersection.
  • a truing on an internal surface of the nozzle holder allows for traverse flow through the drain channel.
  • the bores pass from pressure channel and drain channel in the direction of the longitudinal axis of the nozzle holder or perpendicularly thereto.
  • the nozzle does not have to be positioned transversely to the bore spindle during the boring of the channels but, instead, several axially parallel bores may be bored concurrently. Because of the fact that more than a half of the diameter of the nozzle support is available for the section of the pressure socket protruding into the nozzle holder, the attaching of the pressure socket by screwing it into the pressure channel does not present any problems.
  • FIGURE is a pictorial view, partially in section, of a fuel injection nozzle according to the present invention.
  • a fuel injection nozzle 2 includes a chamber 3 of a closing spring 4 in a nozzle support 1 of the injection nozzle 2, which chamber 3 is connected with a drain line (not shown) via a drain channel 5 arranged coaxially to the nozzle support 1.
  • a pressure channel 6 passes to a pressure chamber (not shown) of the injection nozzle 2.
  • the pressure channel 6 proceeds through a bore 7 in a pressure socket 8 which is screwed into a radial bore 9 which traverses the fuel drain bore 5.
  • Seals l0 and 11 are provided between the socket 8 and the nozzle holder 1 before and after the intersection.
  • a pressure line (not shown) leads from a fuel injection pump to the socket 8.
  • Both sections of the fuel drain channel 5, interrupted in the bore 9, are connected to one another by a recess 12 formed between a portion of the socket 8' and an inner surface of the nozzle holder 1 near the seal 10.
  • the recess 12, as illustrated, is formed by space provided by turning (machining) off a portion of the outer surface of the socket 8 so as to provide a portion of reduce diameter, which portion of reduced diameter extends into a portion of the bore 9 shown to the left of the drain channel 5.
  • the diameter of the bore 9 into which the portion of the socket 8 of reduced diameter extends is larger than the reduced diameter.
  • a fuel injection nozzle for internal combustion engines having a nozzle holder, a pressure channel leading in sections to a nozzle pressure chamber, along a spring chamber, and passing eccentrically in the nozzle holder, the pressure channel having a connecting bore passing radially to the longitudinal axis of the nozzle holder, and having a drain channel of the spring chamber which passes in vicinity of a pressure channel connection bore in a longitudinal direction of the nozon a face of said pressure socket protruding into said nozzle holder, and a second seal arranged on an inner face formed within said nozzle holder.
  • a fuel injection nozzle according to claim 2 wherein said intersection is formed by a bore which passes substantiallyperpendicular to the longitudinal axis of said nozzle holder.
  • a fuel injection nozzle according to claim wherein said intersection is formed by-a bore which passes substantially perpendicular to the longitudinal axis of said nozzle holder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
US435165A 1973-02-07 1974-01-21 Fuel injection nozzle Expired - Lifetime US3860178A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732305766 DE2305766C3 (de) 1973-02-07 Kraftstoffeinspritzdüse für Brennkraftmaschinen

Publications (1)

Publication Number Publication Date
US3860178A true US3860178A (en) 1975-01-14

Family

ID=5871093

Family Applications (1)

Application Number Title Priority Date Filing Date
US435165A Expired - Lifetime US3860178A (en) 1973-02-07 1974-01-21 Fuel injection nozzle

Country Status (6)

Country Link
US (1) US3860178A (enrdf_load_stackoverflow)
JP (1) JPS5738783B2 (enrdf_load_stackoverflow)
FR (1) FR2216455B1 (enrdf_load_stackoverflow)
GB (1) GB1454634A (enrdf_load_stackoverflow)
IT (1) IT1007594B (enrdf_load_stackoverflow)
SE (1) SE389541B (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD252630S (en) 1977-02-04 1979-08-14 Lucas Industries Limited Fuel injection nozzle
USD253291S (en) 1977-02-04 1979-10-30 Lucas Industries Limited Fuel injection nozzle
US4715103A (en) * 1986-08-04 1987-12-29 Caterpillar Inc. Method of producing interference connection between a fluid line and a fluid injector
WO1999028617A1 (de) * 1997-12-03 1999-06-10 Robert Bosch Gmbh Kraftstoffzuleitungseinrichtung
EP1302655A3 (en) * 2001-10-12 2003-07-23 C.R.F. Società Consortile per Azioni Device for fluidtight connection of a fitting to an internal combustion engine fuel injector
EP1477667A1 (en) * 2003-05-13 2004-11-17 Siemens Aktiengesellschaft Elastomer-free sealing arrangement for a pressure chamber that is connected with a low and high pressure line

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2511084B1 (fr) * 1981-08-07 1985-10-04 Semt Injecteur de combustible notamment pour un moteur a combustion interne
DE19614982C1 (de) * 1996-04-16 1997-10-16 Hatz Motoren Hochdruckleitungsanschluß

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2439257A (en) * 1944-03-15 1948-04-06 Gen Electric Fuel atomizing nozzle
US2613996A (en) * 1949-05-24 1952-10-14 Chrysler Corp Sealed flow device
US3097795A (en) * 1960-11-01 1963-07-16 Parker Hannifin Corp Spill type fuel injection nozzle
US3131866A (en) * 1961-12-07 1964-05-05 Clessie L Cummins Fuel injector
US3464627A (en) * 1966-06-21 1969-09-02 Sopromi Soc Proc Modern Inject Electromagnetic fuel-injection valve
US3589610A (en) * 1969-05-15 1971-06-29 Spraying Systems Co Variable flow rate spray gun with pressure relief

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2365752A (en) * 1942-04-11 1944-12-26 Timken Roller Bearing Co Fuel injector
JPS4727088U (enrdf_load_stackoverflow) * 1971-04-08 1972-11-27
DE2120465C3 (de) * 1971-04-27 1973-10-11 Maschinenfabrik Augsburg-Nuernberg Ag, 8900 Augsburg Brennstoffeinspritzventil

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2439257A (en) * 1944-03-15 1948-04-06 Gen Electric Fuel atomizing nozzle
US2613996A (en) * 1949-05-24 1952-10-14 Chrysler Corp Sealed flow device
US3097795A (en) * 1960-11-01 1963-07-16 Parker Hannifin Corp Spill type fuel injection nozzle
US3131866A (en) * 1961-12-07 1964-05-05 Clessie L Cummins Fuel injector
US3464627A (en) * 1966-06-21 1969-09-02 Sopromi Soc Proc Modern Inject Electromagnetic fuel-injection valve
US3589610A (en) * 1969-05-15 1971-06-29 Spraying Systems Co Variable flow rate spray gun with pressure relief

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD252630S (en) 1977-02-04 1979-08-14 Lucas Industries Limited Fuel injection nozzle
USD253291S (en) 1977-02-04 1979-10-30 Lucas Industries Limited Fuel injection nozzle
US4715103A (en) * 1986-08-04 1987-12-29 Caterpillar Inc. Method of producing interference connection between a fluid line and a fluid injector
WO1999028617A1 (de) * 1997-12-03 1999-06-10 Robert Bosch Gmbh Kraftstoffzuleitungseinrichtung
EP1302655A3 (en) * 2001-10-12 2003-07-23 C.R.F. Società Consortile per Azioni Device for fluidtight connection of a fitting to an internal combustion engine fuel injector
US6916048B2 (en) 2001-10-12 2005-07-12 C.R.F. Societa Consortile Per Azioni Device for fluid-tight connection of a fitting to an internal combustion engine fuel injector
EP1477667A1 (en) * 2003-05-13 2004-11-17 Siemens Aktiengesellschaft Elastomer-free sealing arrangement for a pressure chamber that is connected with a low and high pressure line
WO2004101987A1 (en) * 2003-05-13 2004-11-25 Siemens Aktiengesellschaft Elastomer-free sealing arrangement for a pressure chamber that is connected with a low and a high pressure line

Also Published As

Publication number Publication date
FR2216455B1 (enrdf_load_stackoverflow) 1978-03-24
JPS49111032A (enrdf_load_stackoverflow) 1974-10-23
DE2305766A1 (de) 1974-08-08
GB1454634A (en) 1976-11-03
JPS5738783B2 (enrdf_load_stackoverflow) 1982-08-17
IT1007594B (it) 1976-10-30
SE389541B (sv) 1976-11-08
FR2216455A1 (enrdf_load_stackoverflow) 1974-08-30
DE2305766B2 (de) 1976-08-05

Similar Documents

Publication Publication Date Title
US10260450B2 (en) Cylinder head
US8794939B2 (en) Fuel pump head having an external chamber
US2144862A (en) Fuel pump injector
US3860178A (en) Fuel injection nozzle
US6488011B1 (en) High-pressure fuel reservoir
US5011082A (en) Perfected diesel engine electromagnetic fuel injector
ES1000233U (es) Un regulador de flujo de fluido para un dispositivo de alimentacion intravenosa
US20190072063A1 (en) Flow restrictor for an injector
US4315603A (en) Fuel injection valve
US6491288B2 (en) Carburetor fuel mixture adjustment assembly
JPH09242642A (ja) 燃料供給装置
US3499607A (en) Fuel injection valve device
GB2311558A (en) Fuel injection nozzle with compressive radial pre-loading
US6840225B2 (en) Fuel injector assembly
US6824082B2 (en) Method of producing a fuel injector, and relative fuel injector
EP0209244B1 (en) Fuel injection nozzle
US3347470A (en) Fuel injection nozzle
JPH09242643A (ja) 燃料供給装置
GB2570648A (en) Fuel Pump
JPH08319921A (ja) コモンレール式燃料噴射装置
JPH02308966A (ja) 燃料噴射弁
JPS62101879A (ja) 燃料噴射エンジンにおける燃料供給配管の接続構造
JPH0154552B2 (enrdf_load_stackoverflow)
EP0922852A2 (en) Fuel system
KR830001628Y1 (ko) 연료분사 밸브